Road-grading machine.



PATBNTED APR. 26, 1904.

A. L. POWLISON '& E. G. EBB.

ROAD GRADING MACHINE; APPLIEATION FILED 1339.18 1903.

no MODEL. 2 sums-sum 1.

PATEiwEnAPR. 26 1904.- A. L. rowmson & E. 0. EBB.

ROAD GRADING MACHINE.

APPLIOATION FILED 1120. 1a. 1903.

2 SHEETS-SHEET 2.

no MODEL.

E5: in

qwHmeoM/a UNITED STATES I Patented Apri126, 190a PATENT OFFICE.

ALLEN L. POWLISON, OF ERIE, AND ELIAS G. ERB, OF- HUNTER, NORTH DAKOTA,ASSIGNORS OF ONE-THIRD TO DAVID H. HOUSTON, OF HUN- TER, NORTH DAKOTA.

ROAD-GRADING MACHINE.

SPECIFICATION forming part of Letters Patent No. 758,148, dated April26, 1904.

Application filed December'lS, 1903. Serial No. 185,764. (No model.)

To all whom it may concern;

Be it known that we, ALLEN L. POW'LISON, residing at Erie, and ELIAs C.ERB, residing at Hunter, in the county of Cass and State of NorthDakota, citizens of the United States, have invented new and usefulImprovements in Road-Grading Machines, of which the following is aspecification.

Our invention relates to grading-machines,

1.0 and has for its object the provision of an improved grading-machinecapable of doing work better and more expeditiously than thegrading-machines heretofore made and used prior to our invention.

5 Our invention consists of the combination, with a grading-machine, ofa rotary disk plow adapted and positioned to deliver dirt upon thedirt-carrier of a grading-machine.

In the drawings forming part of this speci- V 2 fication similarcharacters of reference denote the similar parts in all of theillustrations.

Figure 1 represents a perspective View of our grading-machine. Fig. 2represents a cross-section through the adjustable frame A and showingthe dirt-carrier in side elevation and the rotary disk in frontelevation.

In carrying out our invention a suitable concave rotary disk plow B maybe axled at N upon a standard O, which standard may be secured to theadjustable beam A and the rotary disk plow positioned to deliver dirtupon the dirt-carrier D of the grading-machine.

In our grading-machine, A represents the 3 5 beam for carrying therotary disk plow.

B represents the rotary disk plow. C represents the standard forcarrying the rotary disk plow.

D represents the adjustable endless-apron dirt-carrier, having its lowerend adjustable to raise and lower.

E and F are bolts passed through the beam and the plow standard, and thesaid bolts hold the standard secure to the beam.

Gr represents a small standard that is secured to the large standard C,and the said small standard passes over the top of the rotary disk plow,which small standard is bent down at G, as shown in Fig. 2, and the saidsmall standard supports a small mold- 5 board adjusted to scrape therotary disk plow and also assist in turning the dirt over upon theendless dirt-carrier D.

I represents the incurved end of the rear side board upon thedirt-carrier frame.

Having described our invention, we claim 1. In a grading-machine thecombination of a. rotary disk plow and a dirt-carrier.

2. In a grading-machine the combination of a plow-beam movably'arrangedto raise and lowensaid beam carrying a rotary disk plow, and of anendless-apron dirt-carrier having its lower end adjustable to raise andlower.

3. Ina grading-machine the combination of an endless-apron dirt-carrierhaving its lower end adjustably arranged to raise and lower, and arotary disk plow adjustably arranged to raise and lower, said disk plowplacedin a position where the said plow can deliver dirt upon the saidcarrier. j 7

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

ALLEN L. POWLISON. ELIAS C. ERB. Witnesses:

J. H. GALE, D. McKENzIE.

